Simplex Trading Portfolio holdings
Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.
Top Buys
| 1 |
Amazon
AMZN
|
$44.9M |
| 2 |
iShares Russell 2000 ETF
IWM
|
$31.7M |
| 3 |
TWX
Time Warner Inc
TWX
|
$26.1M |
| 4 |
Booking.com
BKNG
|
$21.7M |
| 5 |
Alphabet (Google) Class C
GOOG
|
$18.2M |
Top Sells
| 1 |
SPDR S&P 500 ETF Trust
SPY
|
$42.8M |
| 2 |
Amgen
AMGN
|
$32.3M |
| 3 |
Baidu
BIDU
|
$21.9M |
| 4 |
Micron Technology
MU
|
$21.2M |
| 5 |
Alphabet (Google) Class A
GOOGL
|
$17.7M |
Sector Composition
| 1 | Consumer Discretionary | 21.41% |
| 2 | Technology | 19.71% |
| 3 | Communication Services | 17.68% |
| 4 | Healthcare | 6.08% |
| 5 | Financials | 5.75% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
76
First Solar
FSLR
$20.9B
| $3.63M | 0.15% | +79,053 | New | +$3.63M |
|
|
PXD
77
DELISTED
Pioneer Natural Resource Co.
PXD
| $3.55M | 0.15% | 24,086 +16,479 | +217% | +$2.43M |
|
78
Aptiv
APTV
$17.3B
| $3.35M | 0.14% | 34,058 +22,103 | +185% | +$2.17M |
|
79
Yelp
YELP
$1.99B
| $3.35M | 0.14% | 77,390 -64,961 | -46% | -$2.81M |
|
80
Hewlett Packard
HPE
$29.6B
| $3.32M | 0.14% | +225,580 | New | +$3.32M |
|
81
Light & Wonder
LNW
$7.76B
| $3.3M | 0.13% | +71,933 | New | +$3.3M |
|
82
Advanced Micro Devices
AMD
$264B
| $3.18M | 0.13% | 249,220 -267,517 | -52% | -$3.41M |
|
83
Radware
RDWR
$1.08B
| $3.15M | 0.13% | 186,663 +60,464 | +48% | +$1.02M |
|
84
ProShares Ultra VIX Short-Term Futures ETF
UVXY
$690M
| $3.13M | 0.13% | +151,904 | New | +$3.13M |
|
85
Berkshire Hathaway Class B
BRK.B
$1.09T
| $3.08M | 0.13% | 16,813 +4,591 | +38% | +$842K |
|
86
SPDR Gold Trust
GLD
$107B
| $3.08M | 0.13% | 25,352 -65,665 | -72% | -$7.98M |
|
87
Marriott International Class A Common Stock
MAR
$72.7B
| $3.04M | 0.12% | +27,565 | New | +$3.04M |
|
|
TWTR
88
DELISTED
Twitter, Inc.
TWTR
| $3M | 0.12% | 178,051 -45,708 | -20% | -$771K |
|
89
Eli Lilly
LLY
$657B
| $2.98M | 0.12% | 34,846 -21,611 | -38% | -$1.85M |
|
90
iShares Russell 2000 Value ETF
IWN
$11.8B
| $2.94M | 0.12% | +23,693 | New | +$2.94M |
|
91
Global X Lithium & Battery Tech ETF
LIT
$1.08B
| $2.94M | 0.12% | 78,555 +72,518 | +1,201% | +$2.71M |
|
92
Intel
INTC
$107B
| $2.92M | 0.12% | 76,571 -182,415 | -70% | -$6.94M |
|
93
Chevron
CVX
$324B
| $2.73M | 0.11% | 23,242 -17,405 | -43% | -$2.04M |
|
94
Charter Communications
CHTR
$36.3B
| $2.7M | 0.11% | +7,432 | New | +$2.7M |
|
95
Illumina
ILMN
$15.8B
| $2.7M | 0.11% | 13,554 -890 | -6% | -$177K |
|
96
WisdomTree Japan Hedged Equity Fund
DXJ
$3.7B
| $2.62M | 0.11% | +47,935 | New | +$2.62M |
|
97
ASML
ASML
$292B
| $2.56M | 0.1% | 14,945 +9,326 | +166% | +$1.6M |
|
98
Kellanova
K
$27.6B
| $2.54M | 0.1% | +40,702 | New | +$2.54M |
|
99
Deutsche Bank
DB
$67.7B
| $2.53M | 0.1% | +146,559 | New | +$2.53M |
|
100
Zimmer Biomet
ZBH
$21B
| $2.5M | 0.1% | 21,327 +12,708 | +147% | +$1.49M |
|